diff --git a/spring-cloud.html b/spring-cloud.html
index 6f80c45..205c774 100644
--- a/spring-cloud.html
+++ b/spring-cloud.html
@@ -1314,7 +1314,12 @@ property values locally. It follows the same rules as the Config
Server, and has the same external configuration via encrypt.*. Thus
you can use encrypted values in the form {cipher}* and as long as
there is a valid key then they will be decrypted before the main
-application context gets the Environment.
Environment. To use the encryption
+features in a client you need to include Spring Security RSA in your
+classpath (Maven co-ordinates
+"org.springframework.security:spring-security-rsa") and you also need
+the full strength JCE extensions in your JVM (google it and download
+from Oracle).